let arr=[
{
id:1,
name:1,
children:[
{
id:2,
name:2,
children:[
{
id:3,
name:3,
children:[]
}
]
}
]
},
{
id:4,
name:4,
children:[
{
id:5,
name:5,
children:[
{
id:6,
name:6,
children:[]
}
]
}
]
},
]
function getTree(arr,id){
for(let i=0;i<arr.length;i++){
if(arr[i].id==id){
return [arr[i]];
}
if(arr[i].children.length>0){
let node = getTree(arr[i].children,id)
if(node!==undefined){
return node.concat(arr[i]);
}
}
}
}
console.log(getTree(arr,6));